AnsweredAssumed Answered

Top Down Modeling Patterns

Question asked by Sean Burrowes on Oct 28, 2011
Latest reply on Oct 29, 2011 by Glenn Schroeder

Like • Show 0 Likes0
Comment • 5

Hi everyone I am trying to create a top down model of a metal frame which we use in our product. The frame consists of a number of C-Channels, Angles and Flatbars. At the moment I have a good bottom down model but the problem is dealing with all of the design tables for each of the parts and sub-assemblies.

I am just starting out and decided to see if I could model the C-Channel first. The main problem I am having is with figuring out a way to model the bolt holes in the Channel. I first tried using linear sketch pattern, which will actually work but since it records the spacing and the number of holes. However, I find that linear sketch pattern entities are still floating. You don't seem to be able to lock it down unless you add a relation later which wont work if the number of copied entities is being changed in the design table.

What is the perferred method for translating your patterning from an assembly layout sketch to a part?

Thanks for your help

No one else has this question

Outcomes

Mukesh Prasad Oct 28, 2011 12:49 PM

Hi Sean,

This might not answer your question but you said you are modelling the "C" Channels for the Frame. Why aren't you using Weldment to create your frame? You could also use Hole Series to create bold holes within the assembly.

Actions

Ryan Werner Oct 28, 2011 1:03 PM

Hi Sean,

Have you tried using Linear Pattern or a Sketch Driven Pattern for the holes instead of a sketch pattern. With a linear pattern you can change the number of holes and distance between them per configuration. A Sketch Driven pattern is nice because you can set the holes at any distance and location you want in case they are not linear. For holes a Sketch Driven pattern is basically just like using the hole wizard.

Ryan W.

Actions

Glenn Schroeder Oct 28, 2011 1:53 PM

Hello Sean,

Welcome to the forum.

I never use the linear sketch pattern. I tried it a few times and gave up. Instead of that I create one instance and then do a Linear Pattern of the feature or body. It works much better and you are able to go back and edit it later if you need to. And Mukesh is right, I would definitely use Weldments for the channels and angles. I use weldments on almost every project, and I typically put anything that is welded together as a single Part, then use the Select Bodies function to detail individual bodies in the drawing.

Glenn

Actions

Sean Burrowes Oct 28, 2011 5:45 PM

Hi,

Thank you for welcoming me to the board and for your suggestions. I knew I was going to hear it for not using Weldments I'll just say I prefer not to use them for this, as I do not want to get into a discussion about that for the moment.

In response to Mukesh, you are right I could insert the holes at an assembly level and use linear pattern. However, I do not believe that they will show up at the part level if I do it this way, which I would like them too. You also have more limited options for cutting (Only "Through All", "Mid-Plane" and "Blind").

In response to Ryan and Glenn, what I actually am trying to do is use linear pattern at the part level but somehow link the "number of instances" and "spcing" to the assembly so I can change it on my assembly design table and have it propagate through to my part.

I do not want to have seperate design tables for my parts as that is the problem I have with the bottom up model I have right now.

Actions

Glenn Schroeder @ Sean Burrowes on Oct 29, 2011 8:51 AM

Sean Burrowes wrote:

In response to Mukesh, you are right I could insert the holes at an assembly level and use linear pattern. However, I do not believe that they will show up at the part level if I do it this way, which I would like them too.

Sean,

I'm at home and don't have SW here, so I am not able to get the exact wording or post a screen shot, but when you place a hole in a part in an assembly you can have it show up at the part level. I believe there is a box to check that says "propagate feature to part".

Actions

5 Replies

Mukesh Prasad Oct 28, 2011 12:49 PM
Mark Correct
Correct Answer
Hi Sean,
This might not answer your question but you said you are modelling the "C" Channels for the Frame. Why aren't you using Weldment to create your frame? You could also use Hole Series to create bold holes within the assembly.
Like • Show 0 Likes0
Actions
Ryan Werner Oct 28, 2011 1:03 PM
Mark Correct
Correct Answer
Hi Sean,

Have you tried using Linear Pattern or a Sketch Driven Pattern for the holes instead of a sketch pattern. With a linear pattern you can change the number of holes and distance between them per configuration. A Sketch Driven pattern is nice because you can set the holes at any distance and location you want in case they are not linear. For holes a Sketch Driven pattern is basically just like using the hole wizard.

Ryan W.
Like • Show 0 Likes0
Actions
Glenn Schroeder Oct 28, 2011 1:53 PM
Mark Correct
Correct Answer
Hello Sean,

Welcome to the forum.

I never use the linear sketch pattern. I tried it a few times and gave up. Instead of that I create one instance and then do a Linear Pattern of the feature or body. It works much better and you are able to go back and edit it later if you need to. And Mukesh is right, I would definitely use Weldments for the channels and angles. I use weldments on almost every project, and I typically put anything that is welded together as a single Part, then use the Select Bodies function to detail individual bodies in the drawing.

Glenn
Like • Show 0 Likes0
Actions
Sean Burrowes Oct 28, 2011 5:45 PM
Mark Correct
Correct Answer
Hi,

Thank you for welcoming me to the board and for your suggestions. I knew I was going to hear it for not using Weldments I'll just say I prefer not to use them for this, as I do not want to get into a discussion about that for the moment.

In response to Mukesh, you are right I could insert the holes at an assembly level and use linear pattern. However, I do not believe that they will show up at the part level if I do it this way, which I would like them too. You also have more limited options for cutting (Only "Through All", "Mid-Plane" and "Blind").

In response to Ryan and Glenn, what I actually am trying to do is use linear pattern at the part level but somehow link the "number of instances" and "spcing" to the assembly so I can change it on my assembly design table and have it propagate through to my part.

I do not want to have seperate design tables for my parts as that is the problem I have with the bottom up model I have right now.
Like • Show 0 Likes0
Actions
- Glenn Schroeder @ Sean Burrowes on Oct 29, 2011 8:51 AM
  Mark Correct
  Correct Answer
  Sean Burrowes wrote:
  
  In response to Mukesh, you are right I could insert the holes at an assembly level and use linear pattern. However, I do not believe that they will show up at the part level if I do it this way, which I would like them too.
  Sean,
  
  I'm at home and don't have SW here, so I am not able to get the exact wording or post a screen shot, but when you place a hole in a part in an assembly you can have it show up at the part level. I believe there is a box to check that says "propagate feature to part".
  Like • Show 0 Likes0
  Actions

Top Down Modeling Patterns

Outcomes

Related Content

Recommended Content